ScreenSaver: On race-y platforms, only force a refresh on close if the

widget was actually closed *immediately*.

If it's delayed (by time, tap or gesture), leave it alone.

Fix #9285

frontend/device/generic/device.lua

@@ -273,8 +273,8 @@ function Device:onPowerEvent(ev)
                     end
                 end
                 self:resume()
-                Screensaver:close()
-                if self:needsScreenRefreshAfterResume() then
+                local widget_was_closed = Screensaver:close()
+                if widget_was_closed and self:needsScreenRefreshAfterResume() then
                     UIManager:scheduleIn(1, function() self.screen:refreshFull() end)
                 end
                 self.screen_saver_mode = false

frontend/device/kindle/device.lua

@@ -273,10 +273,12 @@ function Kindle:outofScreenSaver()
     if self.screen_saver_mode == true then
         if self:supportsScreensaver() then
             local Screensaver = require("ui/screensaver")
-            Screensaver:close()
-            -- And redraw everything in case the framework managed to screw us over...
-            local UIManager = require("ui/uimanager")
-            UIManager:nextTick(function() UIManager:setDirty("all", "full") end)
+            local widget_was_closed = Screensaver:close()
+            if widget_was_closed then
+                -- And redraw everything in case the framework managed to screw us over...
+                local UIManager = require("ui/uimanager")
+                UIManager:nextTick(function() UIManager:setDirty("all", "full") end)
+            end
         else
             -- Stop awesome again if need be...
             if os.getenv("AWESOME_STOPPED") == "yes" then

frontend/ui/screensaver.lua

@@ -776,6 +776,9 @@ function Screensaver:close()
         self.delayed_close = true
     elseif screensaver_delay == "disable" then
         self:close_widget()
+        -- NOTE: Notify platforms that race with the native system (e.g., Kindle or needsScreenRefreshAfterResume)
+        --       that we've actually closed the widget *right now*.
+        return true
     elseif screensaver_delay == "gesture" then
         if self.screensaver_widget then
             self.screensaver_widget:showWaitForGestureMessage()